Belt-forming drum



E. C. WIESE.

BELT FORMING DRUM.

APPLICATION FILED DECJO, 1919.

1,394,457, Patented 0613. 18, 1921.

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ATTORNEY E. C. WlESE.

BELT FORMING DRUM. APPLICATION FILED Demo. 1919.

1,394,457, Patented Oct. 18, 19 21.

3 SHEETS-SHEET 2 INVENTOR. fdW/n C W/ase BY w/zm/ A TTORNEY E. c. WIESE.

BELT FORMING DRUM.

APPLICATION FILED DEC. 10, 1919.

1,394,457, Patented Oct. 18, 1921.

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fdW/h C. l/V/csa H I BY) ATTORNEY UNITED STATES PATENT OFFICE.

EDWIN C. WIESE, OF MILWAUKEE, WISCONSIN.

BELT-FORMING DRUM.

Applicationfiled. December 10, 1919. Serial No. 343,809.

T 0 all whom it may concern:

Be it known that I, EDWIN C. VVIEsE, residing at Milwaukee, county of Milwaukee, and State of WVisconsin, have invented certain new and useful Improvements in Belt- Forming Drums, of which I declare the following to be a fL1ll,'Cl6LI', and exact description.

This invention relates to an improved belt forming drum which is particularly adapted to be employed with the manufacture of fan belts designed to be used upon automobiles although capable of being employed in other suitable relations wherever belts of this character are used for the purpose of driving moving parts.

In the construction-of devices of this character it is the usual practice to wind a plurality of layers of rubber impregnated fabric upon a suitable drum structure so that the several layers are forced into close contact with each other, and when a suitable number of layers have been placed upon the drum the entire fabric carried by the drum is vulcanized to form the same into a substantially integral mass whereupon the cylindrical roll of material is removed from the drum preparatory to being out into suitable strips for forming the belt. Considerable diiiiculty is experienced in removing the material from the drum after the completion of the vulcanization process by reason of the fact that the material in its original form is highly adhesive and is drawn tightly upon the outer surface of the drum previous to the vulcanization of the same.

One object of the invention is to provide a drum of this character constructed in such a manner as to be capable of use to permit the material to be readily removed therefrom after the completion of the vulcanization process.

A further object of the invention is to provide a device ofthis character wherein the cylindrical portion of the drum is formed of sections pivotally connected together and so constructed as to be capable of being retained in extended position during the process of winding the material thereon.

A further object of the invention is to provide a device of this character which is of simple construction and efficient in opera tion.

The objects of the invention are accomplished in one instance by the devices and means described in the following specification, but it is evident that the same may be varied widely without departing from the scope of the invention as pointed out in the appended claims. A structure constituting one embochment ofthe invention is illustrated in the accompanying drawings forming a part hereof in which:

Figure I is a side elevational view of a structure adapted to be employed for suitably supporting the various rolls necessary in winding the rubber impregnated fabric ma ter al upon the drum preparatory to vulcanization.

Fig. II is a side elevational view of the structure illustrated in Fig. I.

Fig. III is a transverse sectional View of the structure shown in Figs. I. and II.

Fig. IV is a side elevational view of the drum upon which the fabric material is wound preparatory to vulcanization, illustratmg in the broken sectional line the tapered end portion of the cylinder which fits within the groove formed in the head.

F1g. V is an end elevational view, partially in section, illustrating the drum struc-, ture and one of the end plates employed for retaining the cylindrical portion of the drum in itsextended position.

Fig. VI is a transverse sectional view illustrating the cylindrical portion of the drum and the relation of the rubber impregnated fabric with respect thereto.

FlgVII is a sectional view of one of the end. plates illustratin the position of the circular groove formed therein for the purpose of receiving the tapered end portion of the cylinder and retaining the cylinder in extended position. I V

In the embodiment of the invention illustrated herewith 1 indicates the frame structure of a lathe of the usual form which is capable of being utilized for the purpose of rotatably supporting the several rolls used in transferring the rubber impregnated fabric material to the drum prior to the process of vulcanization. 2 indicates the headstock of the lathe while 3 indicates the tail-stock which together support the drum and enables the same to be rotated while the rubber impregnated fabric material is being applied to the exterior surface thereof. 4 is a pressure roll of the usual or any ordinary construction which is supported by a shaft 5 having its end portions supported in suitable bearings 6 which bearings are slidably mounted in ed in bearings 13 supported by a supplemental frame 14 of suitable constructionandthis roll is capable of being rotated in any suitable or desired manner as from the power pulley to which rotation is communicated to the head-stock of the lathe.

A suitable frame structure 15 is arranged in proximity to the drum carried by the lathe and a roll 16 is supported by the frame 15 in suitable bearings 17, the roll 16 being adapted to be so positioned that its axis is substantially parallel to the axes of the drum 11 and the roller 12. As the material is supplied for the purpose of forming the fan belt, it consists of alternate layers of rubber impregnated fabric 18 and strips of muslin or other suitable material 19 wound upon the roll 16, considerable quantities of the material being placed upon the roll 16 preparatory to using the same in the formation of the belt. The roll 16 carrying the material thus wound thereon is suitably supported by the bearings 17 and the free ends of the rubber impregnated fabric and muslin layers are secured to the drum 11 and roll 12 respectively. The layer of rubber impregnated fabric 18 is passed over the pressure roller 4 before being secured to the exterior surface of the drum whereby the pressure exerted upon the pressure'roller 4 insures the rubber impregnated fabric being wound tightly upon the exterior surface of the drum and prevents the formation of wrinkles or spaces between the successive layers of fabric. The layer of muslin or suitable material 19 is employed for the purpose of preventing the highly adhesive layers of rubber impregnated fabric from adhering to each other on the roll 16 so as to prevent the proper feeding of the fabric upon rotation of the drum. The parts being arranged in this position rotation is imparted to the drum 11 and to the roll 12 whereupon the rubberized fabric is wound upon the drum until a suflicient thickness of fabric strip 18 is cut and the drum removed from the lathe for the purpose of vulcanizing the cylindical roll of material carried upon the outer surface of the drum.

The drum 11 upon which the rubber impregnated fabric is adapted to be wound prior to the process of vulcanizing comprises pered as indicated at 23 to fit within tapered Y circular grooves 24 formed in one side face of each of the circular-plates 25 whereby when the end plates are suitably positioned upon the cylindrical shell the parts of the cylindrical shell are secured in position relative to each other so that the outer surface thereof is forced into close engagement with the fabric material carried thereby. One of the end plates is provided upon the opposite side from that in which the circular groove 24 is formed with a bearing 26 located substantially centrally of the end plate and upon which the end plate is adapted to be supported when the drum structure is in assembled position. The gate 21 is provided with a beveled edge 27 adapted to fit-closely against the beveled edge 28 of the free end of thesegmental cylindrical portion 20 whereby when the end plate portions are secured in position upon the cy lindrical portion a complete cylindrical shell is formed for the reception of the rubber impregnated fabric.

In the operation of this device the parts of the drum are assembled in position illustrated in Fig. IV, whereupon the drum is mounted between the head-stock and tailstock of the lathe in the manner illustrated in Figs. I to III inclusive, and the previously prepared roll of alternate windings of rubber impregnated material and muslin or other suitable fabric for separating the layers of rubberized fabric from each other, is

mounted upon the frame 15 at a'point adjacent to and in such a manner that the axis of the roll 16 is substantially parallel with the axes of the drum supported by the lathe. The end portion of the rubberized fabric 18 is then carriedover the pressure roll 4 and secured to the outer edge of the drum while the end of the muslin layer 19 is secured to the roll 12 in any suitable manner. Rotation is then imparted to the drum and the roll 12 whereupon the rubberized fabric is wound upon the outer surface of the drum under pressure exerted by the roll 4 until a sufiicient quantity has been positioned thereon to make up the requisite thickness of the material which it is desired to form Rota tion of the drum is then stopped and the drum 11 is removed from the lathe and placed in the vulcanizer for the purpose of vulcanizing the rubber impregnated fabric to form the same into a substantially integral mass. After the completion of the vulcanizing operation the cured material A may be removed from the drum and'in removing the same the end plates 25 are preferably first removed whereupon the gate 21 is capable of swinging inwardly toward the interior of the segmental shell 20 and then the cured material A is loosened from the outer surface of the cylindrical shell by inserting a suitable tool beneath the same, whereupon the cured material may be entirely removed from the shell and placed upon another suitably formed drum preparatory to being cut into strips of the neces .sary width for forming belts of the character which is desired.

lVhile I have shown and described in considerable detail a specific embodiment of my invention, it is to be understood that this showing and description is illustrative only and for the purpose of rendering my invention more clear, and that I do not regard the invention as limited to the precise details of construction illustrated or described except in so far as I have included such limitations within the terms of the following claims, in which it is my intention to claim all novelty inherent in my invention broadly as well as specifically.

l/Vhat I claim as new and desire to secure by Letters Patent is:

1. A device of the character described provided with a segmental cylindrical portion a gate pivotally secured to one edge of the cylindrical portion, and end plates adapted to be secured to the end portions of the segment and gate for maintaining them in extended position.

2. A device of the character described comprising a divided cylindrical member, the parts of which are pivotally connected pair of end plates each provided with a circular groove formed in one face thereof for the reception of one of the tapered end portions of the cylindrical shell.

4. In a device of the character described, a cylindrical shell formed of parts hingedly secured together along a line substantially parallel with the axis of the cylinder, the shell being formed with tapered end portions, and a pair of end plates each of which is provided with a circular groove upon one face thereof for the reception of one of the tapered ends of the cylindrical shell.

5. In a device of the character described, a two part cylindrical shell, the parts of which are hingedly connected along a line substantially parallel with the axis of the cylinder, and a pair of end plates adapted to be secured to the ends of the cylindrical shell and having bearings substantially in line with the longitudinal axis of the shell whereby the shell may be mounted for rotation about its axis as a center.

6. In a device of the character described, a two part cylindrical shell the parts of which are hingedly connected along a line substantially parallel with the axis of the cylinder, said shell having its end portions tapered, and a pair of end plates each provided with a groove formed in one face thereof within which the tapered ends of the shell are adapted to fit, and having bearings substantially in line with the longitudinal axis of the shell whereby the shell may be mounted for rotation about its axis as the center.

EDWIN o. WIESE. 

